Pillared Floating Thermometers
£24.99
In the 17th century Galileo discovered that liquids change density with temperature. As the liquid in the frame is warmed or cooled by the air around it, the coloured globe inside rises or sinks as their relative density varies, indicating room temperature according to the printed scale.
Colour relates to the floating globe.
Measures 5" square.
Colour relates to the floating globe.
Measures 5" square.
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